Coding and Decoding Questions

If 'x' means '-', '-' means 'x', '+' means '/' and '/' means '+', then what is the value of 15 - 2 / 900 + 90 x 100?

In a certain code language, " EXCITED" is written as "DETICXE". How is "KINLEY" written in that code language?

If 15#2 = 26, 11#3 = 16 and 10#9 = 2, then find the value of 11#4 = ?

If 4!4 = 80, 3!8 = 110 and 6!2 = 80, then find the value of 7!9 = ?

If 70$7 = -10, 50$5 = -10 and 40$8 = -5, then find the value of 10$2 = ?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

75 - 5 + 25 ÷ 125 = ?

If 8 θ 12 δ 6 = 60 and 13 θ 15 δ 11 = 74, then 18 θ 21 δ 15 = ?

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

3X4X5 = 435
4X3X2 = 342
2X3X4= ?